本文阐述了500kV超高压油纸电容式变压器套管抗震理论的计算原理,较详细地介绍了计算变压器套管固有频率的传递矩阵方法及程序。计算结果与试验结果比较,表明对变压器套管的简化、计算方法和程序都是可行的。文中还介绍了确定地震荷载的方法。 This paper describes the calculation principle of the seismic theory of the 500 kV ultra-high pressure oil-paper capacitive transformer casing, and describes in detail the transfer matrix method and program for calculating the natural frequency of the transformer casing. Comparing the calculation results with the test results, it shows that the simplification, calculation method and procedure of the transformer casing are all feasible. The paper also describes the method for determining the seismic load.